Sleeping through the night

Those of you who’s wee ones sleep through the night or just about…how did you do it? Did they just do it naturally? My boy is 7.5 weeks (3.5 corrected). Formula fed. We currently feed 2-3 hours during the day, he’ll have a feed between 8-9pm and then another quickly after around 10-11pm. He’s not a big eater and I can’t seem to get him to just take more at his 8-9pm feed, he only takes max 3-4oz and will stop to sleep or just contently look about, then he wants another feed about an hour later. However, this routine lets him go through to around 3am, and then he’s up again around 6 before going back to a 2-3 hour schedule again around 9-10am. I realise within an 11-12 hr window he’s only up twice, and this is maybe quite good but I’m just interested to find out how others have managed to achieve sleeping through or only one wake up overnight?